'Lads, what's the craic with Ireland and blue Christmas lights? Not some pale blue icy colour, but that full on flashing lights at a Garda checkpoint blue. They don't feel much like Christmas to me at all at all!

'I don't remember ever seeing them anywhere else. Not in the states or places I visited in Europe.

'Maybe they're a more recent thing too?'

There are numerous theories as to why we like to turn the air blue.

One user wrote:

'The story I heard was that when LEDs initially became popular the blue light ones were the cheapest - so that's why we're currently stuck with this ugly reality.

'I've also heard people say it's because 'White lights are too Christmas specific' hence blue was chosen to 'not offend' people which I reckon is as bullshit as it sounds.'

Another agreed: 'Someone in my office was saying it's because they were cheaper alright, still not 100% convinced that explains the phenomena though.'

Redditors are generally agreed that blue is not an acceptable Christmas light hue.

rapmachinenodiggidy wrote: 'they're horrific. f*ck anyone who employs them. all white bulbs or multicoloured are the only acceptable choices. and fuck LED and flashing lights, bulbs only.'